Achieving Blood Pressure Control Targets Reduces the Risk of Left Bundle Branch Block in Patients With Hypertension

医学 血压 心脏病学 左束支阻滞 内科学 心力衰竭
作者
Yonggang Chen,Shou-ling Wu,Liwen Wang,Shuohua Chen,Jing Wang,Hai-liang Xiong,Yanmin Zhang,Chunyu Jiang,Xingang Chen,Ming Gao,Guodong Wang
出处
期刊:American Journal of Hypertension [Oxford University Press]
卷期号:37 (12): 1008-1008
标识
DOI:10.1093/ajh/hpae112
摘要

Abstract OBJECTIVE To investigate the impact of different blood pressure control statuses on newly developed left bundle branch block (LBBB). METHODS A retrospective cohort study was conducted. A total of 88,553 Kailuan employees who underwent health examinations from July 2006 to October 2007 were recruited and categorized into non-hypertension and hypertension groups based on their blood pressure values and hypertension history at the beginning of follow-up. The hypertensive patients were further divided into two groups: the initial blood pressure-controlled group and the initial blood pressure-uncontrolled group based on the blood pressure values at the beginning of follow-up. Based on the blood pressure readings at the end of the follow-up, patients with initially uncontrolled blood pressure were categorized into two groups: those with controlled blood pressure and those with uncontrolled blood pressure. The impact of different blood pressure control statuses on the occurrence of newly developed LBBB was analyzed using a multifactorial Cox proportional hazards model. Stratified analyses by age and gender were performed, along with sensitivity analyses excluding participants with diabetes, chronic kidney disease (CKD), heart attack, or heart failure. RESULTS The non-hypertension group comprised 50,505 individuals, while the hypertension group comprised 38,048 individuals. Among the hypertensives, 2,607 patients had controlled blood pressure, and 35,441 patients had uncontrolled blood pressure at the beginning of follow-up. Among the patients with uncontrolled initial blood pressure, 10,658 patients had controlled blood pressure and 24,783 patients had uncontrolled blood pressure at the end of follow-up. Over a follow-up period of (10.15 ± 3.44) years, a total of 1,014 cases of LBBB occurred. The incidence density of LBBB was 0.80/1,000 person-years in the non-hypertension group, 1.58/1,000 person-years in the hypertension group (Log-Rank test P < 0.001), 1.04/1,000 person-years in the initial blood pressure-controlled group, 1.62/1,000 person-years in the initial blood pressure uncontrolled group, 1.32/1,000 person-years in the follow-up blood pressure-controlled group, and 1.76/1,000 person-years in the follow-up blood pressure uncontrolled group. The results of the multifactorial Cox proportional hazards model analysis showed that adjusting for various influencing factors, compared with the non-hypertension group, the hazard ratio (HR) of developed LBBB was 1.42 (95% confidence interval [CI]: 1.24–1.62) in the hypertension group, and which was 0.97 (0.66–1.44) and 1.45 (1.27–1.66) in the initial blood pressure-controlled and uncontrolled group, 1.27 (1.04–1.54) and 1.53 (1.33–1.77) in the follow-up blood pressure-controlled and uncontrolled group, respectively. CONCLUSION Hypertension serves as a risk factor for newly developed LBBB, and achieving blood pressure control standards can reduce the risk of new-onset LBBB.
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